I see two interesting possibilities. First, take a sheet of this sensor material (with embedded lenses), roll it into a cylinder, and you have a 360 degree panoramic camera! Secondly, the ubiquitous sensors could be used as motion detectors - not as external cameras looking at the human but rather as a camera attached to the human (wristband) detecting the apparent motion of the environment and thereby deducing the person's gestures.

There has been interesting innovations in printed electronics in the last couple of year. But a majority of these devices / applications have been in short term and disposable type products. More information on their reliability and accuracy over time needs to be made available.
MP Divakar